CN119447542A - Mobile power source, battery detection method and electronic equipment - Google Patents

Mobile power source, battery detection method and electronic equipment Download PDF

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Publication number
CN119447542A
CN119447542A CN202411319883.2A CN202411319883A CN119447542A CN 119447542 A CN119447542 A CN 119447542A CN 202411319883 A CN202411319883 A CN 202411319883A CN 119447542 A CN119447542 A CN 119447542A
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CN
China
Prior art keywords
battery
battery pack
mobile power
control circuit
circuit board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202411319883.2A
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Chinese (zh)
Other versions
CN119447542B (en
Inventor
雷灿锋
吴振华
周军
张奇
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Shenzhen Romoss Technology Co Ltd
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Shenzhen Romoss Technology Co Ltd
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Priority to CN202411319883.2A priority Critical patent/CN119447542B/en
Publication of CN119447542A publication Critical patent/CN119447542A/en
Application granted granted Critical
Publication of CN119447542B publication Critical patent/CN119447542B/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/387—Determining ampere-hour charge capacity or SoC
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/751—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/84—Control of state of health [SOH]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses a mobile power supply, a battery detection method and electronic equipment, wherein the mobile power supply comprises a metal shell and a battery pack, the battery pack is arranged in the metal shell, a negative electrode electrically connected with a negative electrode of the battery pack is detachably arranged at a first end of the metal shell, a control circuit board is electrically connected with a positive electrode of the battery pack through the positive electrode to obtain sampling current and battery parameters of the battery pack so as to calculate battery capacity and battery health values of the battery pack based on the sampling current and the battery parameters, a display panel is detachably arranged at a second end of the metal shell, and a display screen arranged on the display panel is connected with the control circuit board and used for displaying the battery capacity and the battery health values. According to the application, the battery capacity and the battery health value of the battery pack can be calculated through the preset battery parameters and the sampling current acquired in real time, and the metal shell and the negative electrode can be detached when the battery health value is abnormal, so that the replacement of the battery pack is realized.

Description

Mobile power supply, battery detection method and electronic equipment
Technical Field
The application relates to the technical field of charging devices, in particular to a mobile power supply, a battery detection method and electronic equipment.
Background
Along with the continuous development of science and technology, various power electronic products play an indispensable role in life, entertainment and work of people. Generally, the endurance of power electronic products is limited, and a mobile power supply is required to charge the electronic products so as to improve the endurance. Most of the existing mobile power supplies are of undetachable structures, and the battery state inside the mobile power supplies cannot be monitored. When the abnormal condition occurs to the battery inside the mobile power supply or the battery health condition is bad, the battery inside the mobile power supply cannot be replaced in time, so that the mobile power supply has the problem of short service life.
Disclosure of Invention
The application provides a mobile power supply, a battery detection method and electronic equipment, which can solve the problem of short service life caused by the fact that the conventional mobile power supply cannot be disassembled and cannot monitor a battery.
The first aspect of the present application provides a mobile power supply, comprising:
the battery pack comprises a metal shell and a battery pack, wherein two ends of the metal shell are arranged in an open mode, the battery pack is accommodated in the metal shell, a negative electrode is detachably arranged at the first end of the metal shell, and the negative electrode is electrically connected with a negative electrode of the battery pack;
The control circuit board is used for acquiring sampling current and battery parameters of the battery pack so as to calculate battery capacity and battery health value of the battery pack based on the sampling current and the battery parameters;
The display panel is detachably arranged at the second end of the metal shell, at least one charging interface and a display screen are arranged on the display panel, the at least one charging interface is connected with the control circuit board and used for externally supplying power according to control signals of the control circuit board, and the display screen is connected with the control circuit board and used for displaying battery capacity and battery health values.
Further, the control circuit board is provided with a sampling resistor and a controller, two ends of the sampling resistor are respectively connected with the controller and the positive electrode, and are used for acquiring the sampling current of the battery pack, and the controller is also used for acquiring sampling time, calibrating battery capacity and evaluating coefficients;
The controller is used for calculating to obtain battery capacity based on the sampling current and the sampling time, and calculating to obtain a battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient;
and responding to the battery health value being lower than a preset threshold value, wherein the controller is used for generating a battery health abnormal signal, and the battery health abnormal signal is displayed through the display panel.
Further, the controller is used for calculating the integral value of the sampling current in the sampling time to obtain the battery capacity, and is used for calculating the ratio of the battery capacity to the calibrated battery capacity and calculating the product of the ratio and the evaluation coefficient to obtain the battery health value.
Further, the display panel includes:
The main board is provided with at least one charging interface and a display screen;
The first extension plate is perpendicular to the main plate and is arranged along the circumference of the main plate around the main plate, a first thread is arranged on the first extension plate, a second thread is arranged at the second end of the metal shell, and the display panel is assembled with the metal shell through mutual screwing of the first thread and the second thread;
the main board is provided with a stud on one side close to the metal shell, the stud penetrates through the control circuit board, and the stud is matched with the nut to fix the control circuit board and the display panel.
Further, the mobile power supply further comprises a key, and the key is connected with the controller and used for inputting battery parameters, wherein the battery parameters comprise a calibrated battery capacity, an evaluation coefficient, an overcharge voltage and a cut-off voltage;
The key is arranged on one side of the main board, which is away from the control circuit board, or on the side wall of the metal shell.
Further, the control circuit board is further provided with a voltage boosting and reducing circuit, the voltage boosting and reducing circuit is connected with at least one charging interface, a sampling resistor and a controller, the controller is used for acquiring sampling voltage through the sampling resistor, and the voltage boosting and reducing circuit is controlled to be switched on or off based on the sampling voltage so as to control the charging and discharging voltage of the battery pack to be boosted or reduced.
Further, the battery parameters further comprise the upper limit temperature of the battery, the control circuit board is further provided with a temperature sensor, the temperature sensor is connected with the controller and used for collecting the temperature of the battery pack, and the controller controls the cut-off of the voltage-increasing and reducing circuit in response to the temperature of the battery pack being greater than or equal to the upper limit temperature of the battery.
Further, the mobile power supply further comprises a bottom shell, the bottom shell comprises a bottom plate and a second extending plate, the second extending plate is perpendicular to the bottom plate and is arranged around the bottom plate along the circumferential direction of the bottom plate, a third thread is arranged on the second extending plate, a fourth thread is arranged at the first end of the metal shell, and the bottom shell is assembled with the metal shell through mutual screwing of the third thread and the fourth thread;
The first end of the negative electrode is fixedly arranged on one side of the bottom plate, which is close to the battery pack, and the second end of the negative electrode is in butt joint with the negative electrode of the battery pack.
The second aspect of the present application provides a battery detection method, comprising:
Acquiring input battery parameters and sampling current of a battery pack;
Calculating a battery capacity and a battery health value of the battery pack based on the sampling current and the battery parameter;
and displaying the battery capacity and the battery health value through a display screen.
A third aspect of the present application provides an electronic device comprising a mobile power supply as described above and a device body electrically connected to the mobile power supply, receiving a charging voltage output by the mobile power supply.
Compared with the prior art, the portable power source is of a detachable structure, the first end of the metal shell can be detached and assembled with the negative electrode, so that the negative electrode is electrically connected with the assembled battery pack, or the negative electrode is detached to expose the battery pack, the abnormal battery pack is convenient to replace, and meanwhile, the second end of the metal shell can be detached and assembled with the display panel. According to the mobile power supply, the sampling current and the preset battery parameters of the battery pack are acquired through the control circuit board electrically connected with the battery pack, and the battery capacity and the battery health value of the battery pack are obtained through calculation based on the sampling current and the battery parameters, so that the state monitoring of the battery pack is realized. The mobile power supply further displays the battery capacity and the battery health value of the battery pack through the display screen electrically connected with the control circuit board, so that the assembled negative electrode and the metal shell are convenient to detach when the battery is abnormal in health, and the battery pack is replaced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a mobile power supply according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of the display panel of FIG. 1;
FIG. 3 is a schematic diagram of an embodiment of the control circuit board in FIG. 1;
FIG. 4 is a schematic diagram of the variation of the sampled current of the battery pack of the present application;
FIG. 5 is a flow chart of an embodiment of a battery detection method according to the present application;
fig. 6 is a schematic structural diagram of an embodiment of the electronic device of the present application.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the application, the mobile power supply, the battery detection method and the electronic device provided by the application are further described in detail below with reference to the accompanying drawings and the detailed description. It is to be understood that the depicted embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," and the like in this disclosure are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Because current portable power source is integrated into an organic whole structure, can't dismantle into a plurality of parts, can't change the inside battery of portable power source promptly, and current portable power source can't carry out the state monitoring to the inside battery of portable power source, consequently when battery abnormality or battery health condition are not good appear, can only change portable power source, leads to portable power source's life to be short.
The application provides a mobile power supply which is of an integrally detachable structure, can monitor the state of a battery pack in the mobile power supply, displays the state of the battery pack through a display screen, and can replace the battery pack by detaching a shell when the battery pack is abnormal, so that the service life of the mobile power supply is effectively prolonged. Referring to fig. 1, fig. 1 is a schematic structural diagram of a mobile power supply according to an embodiment of the application. As shown in fig. 1, the portable power source 1 of the present application includes a metal housing 10, a battery pack 20, a control circuit board 30, a display panel 40, and a bottom chassis 50.
Specifically, the two ends of the metal casing 10 of the present embodiment are open, the interior of the metal casing 10 is used for accommodating the battery pack 20, the second end of the metal casing 10 is detachably disposed with the display panel 40, and the first end of the metal casing 10 is detachably disposed with the bottom case 50.
Alternatively, the battery pack 20 of the present embodiment may be formed by one or more battery packs 20, and a plurality of batteries may be in a serial-parallel structure, which is not limited in the present application.
Referring to fig. 2 in combination with fig. 1, fig. 2 is a schematic structural diagram of an embodiment of the display panel in fig. 1. As shown in fig. 1 and 2, the display panel 40 includes a main board 41 and a first extension board 42, and the display panel 40 is provided with at least one charging interface 43 and a display screen 44. The at least one charging interface 43 is connected with the control circuit board 30 for externally supplying power according to a control signal of the control circuit board 30, and the display screen 44 is connected with the control circuit board 30 for displaying battery capacity and battery health value.
Specifically, the main board 41 is provided with at least one charging interface 43 and a display screen 44. The at least one charging interface 43 of the present embodiment includes a TYPE-C interface, a TYPE-a interface, a lighting interface, etc., and the display screen 44 of the present embodiment may be a liquid crystal display screen.
The first extension plate 42 of the present embodiment is perpendicular to the main plate 41 and is disposed around the main plate 41 along the circumferential direction of the main plate 41, the first extension plate 42 is provided with a first thread, the second end of the metal housing 10 is provided with a second thread, and the display panel 40 is assembled with the second end of the metal housing 10 by mutually screwing the first thread and the second thread.
As shown in fig. 1, the bottom case 50 of the present embodiment includes a bottom plate 51 and a second extension plate 52, the second extension plate 52 is perpendicular to the bottom plate 51 and is disposed around the bottom plate 51 along the circumferential direction of the bottom plate 51, a third screw thread is disposed on the second extension plate 52, a fourth screw thread is disposed on the first end of the metal case 10, and the bottom case 50 is assembled with the first end of the metal case 10 by screwing the third screw thread and the fourth screw thread to each other.
The portable power source 1 of the present embodiment further includes a negative electrode 60, wherein a first end of the negative electrode 60 is fixedly disposed on a side of the bottom plate 51 close to the battery pack 20, and a second end of the negative electrode 60 is in contact with a negative electrode of the battery pack 20. The first end of the metal case 10 is detachably provided with a negative electrode 60 to achieve electrical connection of the negative electrode 60 with the negative electrode of the battery pack 20. Alternatively, the negative electrode 60 of the present embodiment is electrically connected to the control circuit board 30 through the metal case 10.
The control circuit board 30 is provided with a positive electrode 70, and the control circuit board 30 is electrically connected with the positive electrode of the battery pack 20 through the positive electrode 70, so as to communicate with the negative electrode 60, the battery pack 20 and a charging circuit of the positive electrode 70.
As shown in fig. 1, a stud 411 is disposed on one side of the main board 41 near the metal housing 10, the control circuit board 30 is provided with a screw hole, the stud 411 passes through the screw hole on the control circuit board 30, and the stud 411 is matched with a nut to fix the control circuit board 30 and the display panel 40. Meanwhile, the first screw thread and the second screw thread are matched, so that the display panel 40, the control circuit board 30 and the metal shell 10 are relatively fixed.
As shown in fig. 1, the portable power source 1 of the present embodiment is further provided with a key 80, and the key 80 is connected to the control circuit board 30 for inputting battery parameters including a maximum charging current, a battery upper limit temperature, a calibrated battery capacity, an evaluation coefficient, an overcharge voltage, a cut-off voltage, and the like.
The key 80 of the present embodiment is disposed on a side of the main board 41 facing away from the control circuit board 30, and is connected to the control circuit board 30 through an electric wire. In this embodiment, the key 80 is disposed on the main board 41, so that the user can conveniently input the battery parameters while observing the display screen 44. In addition, the key 80 and the control circuit board 30 are in a relatively vertical state, and only enough wires are reserved to connect the key 80 and the control circuit board 30, so that the electric connection between the key 80 and the control circuit board 30 can be ensured, and the screw thread screwing distance between the display panel 40 and the metal shell 10 can be freely adjusted.
Optionally, in another embodiment, the key 80 of the present embodiment may be further disposed on a side wall of the metal housing 10, and in order to ensure the electrical connection between the key 80 and the control circuit board 30, the position of the control circuit board 30 needs to be adjusted by the nut and the stud 411.
Specifically, the control circuit board 30 of the present embodiment is configured to obtain the sampling current and the battery parameter of the battery pack 20, so as to calculate the battery capacity and the battery health value of the battery pack 20 based on the sampling current and the battery parameter, and the display screen 44 is connected to the control circuit board 30 through a screen line, so as to receive and display the battery capacity and the battery health value.
With further reference to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the control circuit board in fig. 1. As shown in fig. 3, the control circuit board 30 of the present embodiment includes a sampling resistor 31, a controller 32, a step-up and step-down circuit 33, and a temperature sensor 34.
Specifically, two ends of the sampling resistor 31 of the present embodiment are respectively connected to the controller 32 and the positive electrode 70, for obtaining the sampling current of the battery pack 20, and the controller 32 is respectively connected to the key 80, the display 44, the buck-boost circuit 33, and the temperature sensor 34.
The controller 32 of the present embodiment obtains the calibrated battery capacity and the evaluation coefficient input by the user through the key 80, and simultaneously obtains the sampling time of the sampling resistor 31, calculates the battery capacity based on the sampling current and the sampling time, and calculates the battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient. In response to the battery health value being below the preset threshold, the controller 32 generates a battery health exception signal that is displayed via the display screen 44 of the display panel 40.
With further reference to fig. 4, fig. 4 is a schematic diagram of the variation of the sampling current of the battery pack according to the present application. In fig. 4, a (V1) is the cut-off voltage, i.e., the lowest discharge voltage, b (V2) is the overcharge voltage, i.e., the maximum charge voltage, and t0-t1 is the sampling time. The controller 32 of the present embodiment obtains the battery capacity by calculating the integral value of the sampling current in the sampling time. The integral calculation formula can be as follows:
Where ηi in the above formula represents the coulombic efficiency of charge and discharge of the power battery, and its value is determined through experiments, for a lithium ion power battery, the discharge efficiency is generally regarded as 1, the charge efficiency is 0.98-1 (within 3C of the charge current), i L (τ) is the charge and discharge current of the power battery at τ, that is, the sampling current in this embodiment, and z (t) is the calculated battery capacity.
Further, the controller 32 of the present embodiment calculates the ratio of the battery capacity to the calibrated battery capacity, and calculates the product of the ratio and the evaluation coefficient to obtain the battery health value, where the specific calculation formula is as follows:
The Cmax in the above formula represents the maximum available capacity of the power battery under the current condition, that is, the calibrated battery capacity in this embodiment, and SOH is the calculated battery health value.
Alternatively, the present embodiment may set the preset threshold to any value between 60%, 80%, or 60% -80%.
The buck-boost circuit 33 of the present embodiment is connected to at least one charging interface 43, a sampling resistor 31 and a controller 32, the controller 32 obtains a sampling voltage through the sampling resistor 31, and controls the buck-boost circuit 33 to be turned on or off based on the sampling voltage to control the charge-discharge voltage of the battery pack 20 to be boosted or stepped down. Meanwhile, the temperature sensor 34 of the present embodiment is used to collect the temperature of the battery pack 20, and the controller 32 controls the step-up/down circuit 33 to be turned off in response to the temperature of the battery pack 20 being equal to or higher than the battery upper limit temperature. Therefore, the portable power source 1 of the present embodiment can realize overvoltage, undervoltage, overcurrent and overtemperature protection for the battery pack 20.
The mobile power supply 1 of the application is of a detachable structure, the first end of the metal shell 10 can be detached and assembled with the negative electrode 60, so that the negative electrode 60 is electrically connected with the assembled battery pack 20, or the negative electrode 60 is detached to expose the battery pack 20, thereby facilitating the replacement of the abnormal battery pack 20, and meanwhile, the second end of the metal shell 10 can be detached and assembled with the display panel 40. According to the mobile power supply 1, the control circuit board 30 electrically connected with the battery pack 20 is used for acquiring the sampling current of the battery pack 20 acquired in real time and the preset battery parameters, and further calculating the battery capacity and the battery health value of the battery pack 20 based on the sampling current and the battery parameters, so that the state monitoring of the battery pack 20 is realized. The mobile power supply 1 further displays the battery capacity and the battery health value of the battery pack 20 through the display screen 44 electrically connected with the control circuit board 30, and the assembled negative electrode 60 and the metal shell 10 are convenient to detach when the battery health is abnormal, so that the battery pack 20 is replaced.
Meanwhile, the battery capacity algorithm can realize battery capacity calculation of batteries of different brands through self-defining of the overcharge voltage and the cut-off voltage, and the battery health value algorithm also adopts a middle section calculation method, so that the algorithm is simple and easy to realize, and the practicability is higher.
The application also provides a battery detection method which can be applied to the mobile power supply 1 of any of the above embodiments, referring to fig. 5, fig. 5 is a flow chart of an embodiment of the battery detection method of the application. As shown in fig. 5, specifically, the battery detection method of the embodiment of the present disclosure may include the steps of:
and S11, acquiring input battery parameters and sampling current of the battery pack.
Before step S11 is performed, the assembly of the display panel 40, the control circuit board 30, the battery pack 20, the bottom case 50 and the metal housing 10 needs to be completed, and the power-up of the mobile power source 1 needs to be completed. The controller 32 acquires the battery parameters input by the user through the key 80 and acquires the sampling current of the battery pack 20 through the sampling resistor 31.
And step S12, calculating the battery capacity and the battery health value of the battery pack based on the sampling current and the battery parameters.
The controller 32 of the present embodiment calculates an integrated value of the sampling current during the sampling time to obtain the battery capacity of the battery pack 20. Specifically, after the power-up of the mobile power supply 1 is completed, the battery pack 20 is in a fully charged state at this time, and the sampling time may specifically be the time from the full-charge release of the voltage to the termination of discharge of the battery pack 20.
Further, the controller 32 of the present embodiment calculates the ratio of the battery capacity to the calibrated battery capacity, and calculates the product of the ratio and the evaluation coefficient, to obtain the battery health value of the battery pack 20, wherein the evaluation coefficient may be the charge/discharge efficiency of the battery pack 20.
And S13, displaying the battery capacity and the battery health value through a display screen.
The controller 32 of the present embodiment sends the calculated battery capacity and battery health value to the display 44, and displays the battery capacity and battery health value through the display 44.
Optionally, the controller 32 of the present embodiment may also generate a battery health abnormal signal when determining that the battery health value is lower than the preset threshold, and the display panel 40 displays the battery health abnormal signal to prompt the user to replace the battery pack 20.
The application also provides an electronic device, refer to fig. 6, and fig. 6 is a schematic structural diagram of an embodiment of the electronic device. As shown in fig. 6, the electronic apparatus 90 of the present embodiment includes a mobile power supply 91 and an apparatus main body 92, the apparatus main body 92 being electrically connected to the mobile power supply 91, and receiving a charging voltage output from the mobile power supply 91. The mobile power source 91 in this embodiment is the mobile power source 1 described in any of the above embodiments, and will not be described herein.
The foregoing is only illustrative of the present application and is not to be construed as limiting the scope of the application, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present application and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the application.

Claims (10)

1. A mobile power supply, comprising:
The battery pack comprises a metal shell and a battery pack, wherein two ends of the metal shell are arranged in an open mode, the battery pack is accommodated in the metal shell, a negative electrode is detachably arranged at the first end of the metal shell, and the negative electrode is electrically connected with a negative electrode of the battery pack;
The control circuit board is used for acquiring sampling current and battery parameters of the battery pack so as to calculate battery capacity and battery health value of the battery pack based on the sampling current and the battery parameters;
The display panel is detachably arranged at the second end of the metal shell, at least one charging interface and a display screen are arranged on the display panel, the at least one charging interface is connected with the control circuit board and used for supplying power to the outside according to control signals of the control circuit board, and the display screen is connected with the control circuit board and used for displaying the battery capacity and the battery health value.
2. The mobile power supply according to claim 1, wherein the control circuit board is provided with a sampling resistor and a controller, two ends of the sampling resistor are respectively connected with the controller and the positive electrode, and are used for obtaining the sampling current of the battery pack, and the controller is also used for obtaining sampling time, calibrating battery capacity and evaluating coefficients;
the controller is used for calculating the battery capacity based on the sampling current and the sampling time, and calculating the battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient;
And responding to the battery health value being lower than a preset threshold value, wherein the controller is used for generating a battery health abnormal signal, and the battery health abnormal signal is displayed through the display panel.
3. The mobile power supply according to claim 2, wherein the controller is configured to calculate an integral value of the sampling current in the sampling time to obtain the battery capacity, and the controller is configured to calculate a ratio of the battery capacity to the calibration battery capacity, and calculate a product of the ratio and the evaluation coefficient to obtain the battery health value.
4. The mobile power supply of claim 2, wherein the display panel comprises:
The at least one charging interface and the display screen are arranged on the main board;
The first extending plate is perpendicular to the main plate and surrounds the main plate along the circumferential direction of the main plate, a first thread is arranged on the first extending plate, a second thread is arranged at the second end of the metal shell, and the display panel is assembled with the metal shell through mutual screwing of the first thread and the second thread;
The main board is provided with a stud on one side close to the metal shell, the stud penetrates through the control circuit board, and the stud is matched with a nut to fix the control circuit board and the display panel.
5. The mobile power supply of claim 4, further comprising a key coupled to the controller for inputting the battery parameters including the nominal battery capacity, the evaluation coefficient, an overcharge voltage, and a cutoff voltage;
The key is arranged on one side of the main board, which is away from the control circuit board, or on the side wall of the metal shell.
6. The mobile power supply according to claim 5, wherein the control circuit board is further provided with a step-up and step-down circuit, the step-up and step-down circuit is connected with the at least one charging interface, the sampling resistor and the controller, the controller is used for obtaining a sampling voltage through the sampling resistor, and controlling the step-up and step-down circuit to be turned on or off based on the sampling voltage so as to control the charge and discharge voltage of the battery pack to be stepped up or stepped down.
7. The mobile power supply according to claim 6, wherein the battery parameter further comprises a battery upper limit temperature, the control circuit board is further provided with a temperature sensor, the temperature sensor is connected with the controller and used for collecting the temperature of the battery pack, and the controller controls the boost-buck circuit to be turned off in response to the temperature of the battery pack being greater than or equal to the battery upper limit temperature.
8. The mobile power supply according to claim 1, further comprising a bottom case including a bottom plate and a second extension plate perpendicular to the bottom plate and disposed around the bottom plate in a circumferential direction of the bottom plate, the second extension plate being provided with a third screw thread, the first end of the metal case being provided with a fourth screw thread, the bottom case being assembled with the metal case by mutual screwing of the third screw thread and the fourth screw thread;
the first end of the negative electrode is fixedly arranged on one side, close to the battery pack, of the bottom plate, and the second end of the negative electrode is abutted to the negative electrode of the battery pack.
9. A battery detection method, the method comprising:
Acquiring input battery parameters and sampling current of a battery pack;
calculating a battery capacity and a battery health value of the battery pack based on the sampling current and the battery parameter;
And displaying the battery capacity and the battery health value through a display screen.
10. An electronic device, characterized in that the electronic device comprises a mobile power supply according to any one of claims 1-8 and a device body, the device body being electrically connected to the mobile power supply, and receiving a charging voltage output by the mobile power supply.
CN202411319883.2A 2024-09-20 2024-09-20 Power banks, battery testing methods and electronic devices Active CN119447542B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201781297U (en) * 2010-07-09 2011-03-30 祥业科技股份有限公司 Three-in-one structure of lithium battery mobile power supply, electric quantity detection and charger
CN203218954U (en) * 2013-05-16 2013-09-25 王龙 A mobile power
CN209691824U (en) * 2019-05-21 2019-11-26 湖南三一智能控制设备有限公司 Battery, remote controler and equipment
CN111693875A (en) * 2020-06-29 2020-09-22 武汉新能源研究院有限公司 Online detection device and online detection method for power battery pack of electric vehicle
CN221448126U (en) * 2023-11-16 2024-07-30 广州特斯克电源科技有限公司 Novel portable power source that can change battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201781297U (en) * 2010-07-09 2011-03-30 祥业科技股份有限公司 Three-in-one structure of lithium battery mobile power supply, electric quantity detection and charger
CN203218954U (en) * 2013-05-16 2013-09-25 王龙 A mobile power
CN209691824U (en) * 2019-05-21 2019-11-26 湖南三一智能控制设备有限公司 Battery, remote controler and equipment
CN111693875A (en) * 2020-06-29 2020-09-22 武汉新能源研究院有限公司 Online detection device and online detection method for power battery pack of electric vehicle
CN221448126U (en) * 2023-11-16 2024-07-30 广州特斯克电源科技有限公司 Novel portable power source that can change battery

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